Fuel and related compositions – 'low-rank' coal
Patent
1986-12-08
1988-07-19
Dees, Carl F.
Fuel and related compositions
'low-rank' coal
44 15R, 44 16R, 44 26, 44592, C10L 512
Patent
active
047582448
ABSTRACT:
Densified coal pellets of improved physical properties and enhanced calorific value are produced by a process which includes subjecting coal to a shearing-attritioning step followed by extrusion and drying steps, characterised by incorporating an additive into the coal that is subject to the said shearing-attritioning step, said additive being chosen from one or more of the group consisting of: alkali metal hydroxides, alkaline earth metal hydroxides, ammonium hydroxide, alkali metal carbonates, alkaline earth carbonates, oxides of base metals, oxides of transition metals, and small molecule carbonyl compounds.
REFERENCES:
patent: 2009463 (1935-07-01), Windecker
patent: 2567136 (1951-09-01), Vloeberghs
patent: 2652354 (1953-09-01), Dryden et al.
patent: 4083697 (1978-04-01), Smith et al.
patent: 4226601 (1980-10-01), Smith
Buchanan Alan S.
Cain David A.
Chaffee Alan L.
Harvey Kay F.
Johns Reginald B.
CRA Services Limited
Dees Carl F.
University Of Melbourne
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